“…Contract of insurance of a motor vehicle is governed by the provisions of the Insurance Act. The terms of the policy as also the quantum of the premium payable for insuring the vehicle in question depends not only upon the carrying capacity of the vehicle but also on the purpose for which the same was being used and the extent of the risk covered thereby. By taking an „act policy', the owner of a vehicle fulfils his statutory obligation as contained in Section 147 of the Act. The liability of the insurer is either statutory or contractual. If it is contractual its liability extends to the risk covered by the policy of insurance. If additional risks are sought to be covered, additional premium has to be paid. If the contention of the learned counsel is to be accepted, then to a large extent, the provisions of the Insurance Act become otiose. By reason of such an interpretation the insurer would be liable to cover risk of not only a third party but also others who would not otherwise come within the purview thereof. It is one thing to say that the life is uncertain and the same is required to be covered, but it is another thing to say that we must read a statute so as to grant relief to a person not contemplated by the Act. It is not for the court, unless a statute is found to be unconstitutional, to consider the rationality thereof. Even otherwise the provisions of the Act read with the provisions of the Insurance Act appear to be wholly rational.